000 00328nam a2200121Ia 4500
008 221219s9999 xx 000 0 und d
100 _aG.L. Ray
245 0 _aResearch methods in Social Sciences and Extension Education
260 _bKalyani Publishers
650 _aAgri. Exetension
700 _aSanjay Mondal
942 _cBK
_07
999 _c4061
_d4061